Question

Can someone please help with these other 2

Answer 1

Part b:

`f(a+3)=(a+3)^2+4`

Solve for (a+3)^2

`= (a^2+2(3)(a)+3^2)+4`

`= a^2+6a+13`

Part c:

`f(d+b)=(d+b)^2+4`

Solve for (d+b)^2

`= (d^2+2db+b^2)+4`

`= d^2+2db+b^2+4`

Let me know if you need any clarifications, thanks!